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Alky timing


djackbanshee

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Piston Travel vs. Crank Rotation

 

 

 

 

 

 

 

d = ((S/2) + L) - (S/2 cos X) - L sin[cos-1 (S/2L sin X)]

 

 

 

S = Stroke (mm)

 

L = Connecting Rod Length (mm)

 

X = Crank Angle Before or After TDC (deg)

 

 

 

 

 

I think 30 degrees BTDC is pretty common. If someone wants to  solve that equation for d, then convert from mm to inches that should give the answer. X = 30.

 

 

 

I've honestly forgotten how to use some of those functions on a calcutor.

 

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